[BUG] Interframe

[Selur]

it broke again, many times already, got tired of it - interframe in avisynth mode, CPU and GPU

Okay, you got some motion interpolation artifacts when using Interframe Avisynth instead of using Vapoursynth.
Since there are afaik. no newer free, not bundled to some manager, versions, there is nothing I can do about differences between the versions. Or a way to report the problem to the developers, since they do not support those old versions anymore.

Only suggestions I can give:

• try lower core counts in the Interframe settings to see whether the problem is threading related
  
• try whether using a different source filter makes a difference
  
• also if you compare the Vapoursynth and Avisynth version, at least share the settings you used in both
  

Depending on the content, adjusting the settings (see: https://www.svp-team.com/wiki/Manual:SVPflow) can also sometimes help with interpolation artifacts.

Cu Selur

Ps.: sharing the output not the input file also doesn't really help to reproduce or advise your problem.